Blazer (thing)

Originally, a man's light jacket, often single-breasted, that is not part of a standard suit, specifically because the jacket is a different color from the pants. It is often part of a uniform, and in the case of school uniforms a blazer may be striped in the school colors. As you might imagine, while blazers are socially acceptable in the proper context, they are often a bit on the ugly or gaudy side.

These days most blazers are black, grey, or dark blue, and are fairly stolid garments. They are distinguished from a sportcoat, if at all, by a less formal cut and bright metal buttons. They are also no longer just a men's jacket, and most blazing blazers seen today are worn by women.